FICA (social security) 6.2%
OASDI (medicare) 1.45%
Federal tax, 10% on first $300 after allowances, 15% on next $400, 25% over that
NY state tax, about 6.5% after allowances
NYC tax, about 3.5%
The federal withholding calculations are here https://www.irs.gov/pub/irs-pdf/p15a.pdf
The state withholding calculations are here https://www.tax.ny.gov/pdf/publications/withholding/nys50_t_nys.pdf
